Trail Ridge (U.S. 34): This road through Rocky Mountain National Park is the highest continuous auto road in the country. Itâs truly an all-American icon â the road itself is listed on the National Register of Historic Places.
Lumber Dimensions. 2x4s are not actually 2 inches by 4 inches. When the board is first rough sawn from the log, it is a true 2x4, but the drying process and planing of the board reduce it to the finished 1.5x3.5 size. Here are the common sizes of lumber, and their actual sizes.
L = nominal lumber length (ft) 1  1 x 4 - divide linear length (feet) by 3 - (length x 1/3) 2  1 x 6 - divide linear length (feet) by 2 - (length x 1/2)  1 x 8 - multiply linear length (feet) by 0.66 - (length x 2/3)